From hdfs-issues-return-207788-archive-asf-public=cust-asf.ponee.io@hadoop.apache.org Wed Jan 17 01:02:08 2018 Return-Path: X-Original-To: archive-asf-public@eu.ponee.io Delivered-To: archive-asf-public@eu.ponee.io Received: from cust-asf.ponee.io (cust-asf.ponee.io [163.172.22.183]) by mx-eu-01.ponee.io (Postfix) with ESMTP id 2EA3118065B for ; Wed, 17 Jan 2018 01:02:08 +0100 (CET) Received: by cust-asf.ponee.io (Postfix) id 1E9C2160C46; Wed, 17 Jan 2018 00:02:08 +0000 (UTC) Delivered-To: archive-asf-public@cust-asf.ponee.io Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by cust-asf.ponee.io (Postfix) with SMTP id 63C02160C34 for ; Wed, 17 Jan 2018 01:02:07 +0100 (CET) Received: (qmail 86776 invoked by uid 500); 17 Jan 2018 00:02:06 -0000 Mailing-List: contact hdfs-issues-help@hadoop.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Delivered-To: mailing list hdfs-issues@hadoop.apache.org Received: (qmail 86765 invoked by uid 99); 17 Jan 2018 00:02:06 -0000 Received: from pnap-us-west-generic-nat.apache.org (HELO spamd2-us-west.apache.org) (209.188.14.142) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 17 Jan 2018 00:02:06 +0000 Received: from localhost (localhost [127.0.0.1]) by spamd2-us-west.apache.org (ASF Mail Server at spamd2-us-west.apache.org) with ESMTP id D3FDF1A326F for ; Wed, 17 Jan 2018 00:02:05 +0000 (UTC) X-Virus-Scanned: Debian amavisd-new at spamd2-us-west.apache.org X-Spam-Flag: NO X-Spam-Score: -100.211 X-Spam-Level: X-Spam-Status: No, score=-100.211 tagged_above=-999 required=6.31 tests=[KAM_NUMSUBJECT=0.5, RCVD_IN_DNSWL_LOW=-0.7, SPF_PASS=-0.001, T_RP_MATCHES_RCVD=-0.01, USER_IN_WHITELIST=-100] autolearn=disabled Received: from mx1-lw-eu.apache.org ([10.40.0.8]) by localhost (spamd2-us-west.apache.org [10.40.0.9]) (amavisd-new, port 10024) with ESMTP id xnaTZPbFPgfI for ; Wed, 17 Jan 2018 00:02:05 +0000 (UTC) Received: from mailrelay1-us-west.apache.org (mailrelay1-us-west.apache.org [209.188.14.139]) by mx1-lw-eu.apache.org (ASF Mail Server at mx1-lw-eu.apache.org) with ESMTP id 5F3335F3B5 for ; Wed, 17 Jan 2018 00:02:04 +0000 (UTC) Received: from jira-lw-us.apache.org (unknown [207.244.88.139]) by mailrelay1-us-west.apache.org (ASF Mail Server at mailrelay1-us-west.apache.org) with ESMTP id 34056E2578 for ; Wed, 17 Jan 2018 00:02:03 +0000 (UTC) Received: from jira-lw-us.apache.org (localhost [127.0.0.1]) by jira-lw-us.apache.org (ASF Mail Server at jira-lw-us.apache.org) with ESMTP id 5718121303 for ; Wed, 17 Jan 2018 00:02:00 +0000 (UTC) Date: Wed, 17 Jan 2018 00:02:00 +0000 (UTC) From: "Chris Douglas (JIRA)" To: hdfs-issues@hadoop.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Commented] (HDFS-12990) Change default NameNode RPC port back to 8020 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-JIRA-FingerPrint: 30527f35849b9dde25b450d4833f0394 [ https://issues.apache.org/jira/browse/HDFS-12990?page=3Dcom.atlassian= .jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=3D1632= 8025#comment-16328025 ]=20 Chris Douglas commented on HDFS-12990: -------------------------------------- [~eyang], that paragraph begs=C2=A0the question. Paraphrasing: "we=C2=A0mus= t retain the change, because we can only work around the=C2=A0consequences.= " In every example you cite,=C2=A0the project and users got some benefit. R= everting this change _is_ an admissible solution to fix the bugs it caused. Our releases solve problems for our users. We're not here to curate a versi= on control system and a set of compatibility rules. > Change default NameNode RPC port back to 8020 > --------------------------------------------- > > Key: HDFS-12990 > URL: https://issues.apache.org/jira/browse/HDFS-12990 > Project: Hadoop HDFS > Issue Type: Task > Components: namenode > Affects Versions: 3.0.0 > Reporter: Xiao Chen > Assignee: Xiao Chen > Priority: Critical > Attachments: HDFS-12990.01.patch > > > In HDFS-9427 (HDFS should not default to ephemeral ports), we changed all= default ports to ephemeral ports, which is very appreciated by admin. As p= art of that change, we also modified the NN RPC port from the famous 8020 t= o 9820, to be closer to other ports changed there. > With more integration going on, it appears that all the other ephemeral p= ort changes are fine, but the NN RPC port change is painful for downstream = on migrating to Hadoop 3. Some examples include: > # Hive table locations pointing to hdfs://nn:port/dir > # Downstream minicluster unit tests that assumed 8020 > # Oozie workflows / downstream scripts that used 8020 > This isn't a problem for HA URLs, since that does not include the port nu= mber. But considering the downstream impact, instead of requiring all of th= em change their stuff, it would be a way better experience to leave the NN = port unchanged. This will benefit Hadoop 3 adoption and ease unnecessary up= grade burdens. > It is of course incompatible, but giving 3.0.0 is just out, IMO it worths= to switch the port back. -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-issues-unsubscribe@hadoop.apache.org For additional commands, e-mail: hdfs-issues-help@hadoop.apache.org